While either behavior is irrelevant to MY level of playing and musicianship I see parallels in other fields.

Bug for bug backward compatibility  vs  implementation dependent behaviors
(olde tyme computer hardware designer speak)

That this can be implemented to behave either way in a MODELED piano is also worth noting.
Presumably this would be a major hack if it could be done at all in a sample library, i.e. some elaborate and probably unsatisfactory post processing tricks.

Anyway, it looks like the team responded well again.

Kudos to MODARTT!

Many thanks,
Jan

For myself, I would prefer if the sostenuto pedal always worked independently from the damper pedal. I can't think of a performance or recording situation where you would want to catch all the dampers up on the sostenuto. On the other hand, it does make sense that a classical pianist who was using Pianoteq as a practice instrument in preparation for playing an acoustic piano might want the pedals to be faithful to the acoustic mechanism, flaws and all.

So, in the end I would cast my vote with the other replies in favor of a user option.

As AKM points out, a more accurate representation of the acoustic mechanism would allow the sostenuto pedal to work correctly if the damper pedal is only halfway down. Last I checked, Pianoteq catches all the dampers on the sostenuto pedal if the damper pedal is pressed at all. The "ideal" solution (though not one that I would need) might be to have a slider instead of a checkbox, so the user can customize at what depth the damper pedal will interfere with the sostenuto pedal. For example, if the slider was at .60, the sostenuto pedal would only catch all the dampers if the damper pedal was depressed to .61 or above.

I'm not sure if anyone would want something like that, but I thought I'd put it out there.

And thanks for the welcome Phillippe!

Glad to have you onboard . Your suggestion of an "ideal" solution looks definitely interesting, we will study its feasibility. Thanks again!

For myself, I would prefer if the sostenuto pedal always worked independently from the damper pedal. I can't think of a performance or recording situation where you would want to catch all the dampers up on the sostenuto. On the other hand, it does make sense that a classical pianist who was using Pianoteq as a practice instrument in preparation for playing an acoustic piano might want the pedals to be faithful to the acoustic mechanism, flaws and all.

So, in the end I would cast my vote with the other replies in favor of a user option.

As AKM points out, a more accurate representation of the acoustic mechanism would allow the sostenuto pedal to work correctly if the damper pedal is only halfway down. Last I checked, Pianoteq catches all the dampers on the sostenuto pedal if the damper pedal is pressed at all. The "ideal" solution (though not one that I would need) might be to have a slider instead of a checkbox, so the user can customize at what depth the damper pedal will interfere with the sostenuto pedal. For example, if the slider was at .60, the sostenuto pedal would only catch all the dampers if the damper pedal was depressed to .61 or above.

I'm not sure if anyone would want something like that, but I thought I'd put it out there.

And thanks for the welcome Phillippe!

You have to have a hardware pedal that could actually control the dampers on a variable basis.  I guess there are a few around, but not many.  That's for sure.

Now, the Damper controls are accessed via the ACTION button (rightward  and low), where they show in a window falling down from that button's position, and they are all sliders. Well here's another Damper control, a slider, that can be placed in the empty space toggled into. As well, it can be placed in a windowlet just as wide and perfectly below the (vertically-longer) ACTION windowlet, so with both windowlets always toggled together by the ACTION button, and this new little Sostenuto Control windowlet elegantly aligned below it, you have yourself matches in function, in position and in access.

Top with a tooltip like all the other ACTION sliders, and it's a pretty systematic whole. Doesn't much disturb existing symmetries about the place, either.

So, in the end I would cast my vote with the other replies in favor of a user option.

As AKM points out, a more accurate representation of the acoustic mechanism would allow the sostenuto pedal to work correctly if the damper pedal is only halfway down. Last I checked, Pianoteq catches all the dampers on the sostenuto pedal if the damper pedal is pressed at all. The "ideal" solution (though not one that I would need) might be to have a slider instead of a checkbox, so the user can customize at what depth the damper pedal will interfere with the sostenuto pedal. For example, if the slider was at .60, the sostenuto pedal would only catch all the dampers if the damper pedal was depressed to .61 or above.

I'm not sure if anyone would want something like that, but I thought I'd put it out there.

And thanks for the welcome Phillippe!

I say add a checkbox in the Options for this behaviour

I agree, particularly when these pedals work differently on different acoustic pianos.